No abstract available for this article

Received: 28 December 2001
Accepted: 28 March 2002
Published online: January 2003

Authors

Nassif Ghoussoub

Mathematics Department, University of British Columbia, Vancouver, BC, Canada V6T 1Z1 and Banff International Research Station, University of British Columbia, 200-1933 West Mall, Vancouver, BC V6T 1Z2, Canada

Changfeng Gui

Department of MathematicsUniversity of Connecticut, Storrs, CT 06269, United States